View Emails As Icons
Viewing your emails as icons rather than as a list means you can associate a different picture with each person you know so you can see at a glance who the email is from. You can sort your emails in order of the date sent, the sender's name, the subject, the icon used, the sender's domain, the email's status or its junk email score.
Junk Email Filter
Eureka Email intelligently learns what is junk email and will delete most spam before you even see it. If a junk email slips through, just drag and drop it from your In folder to the special Junk folder and Eureka will learn the words, phrases and structures in that email so it will get better at catching a similar junk email in the future. Emails sent from people listed in your address book are never regarded as junk so they will never be accidentally deleted.
Multiple POP accounts
You can query as many different POP servers as you want so all of your email can be collected together into one place. You can even separate emails if two or more people use a single POP account but have different email addresses.
Groups Made Easy
With just a click of the mouse you can create a group from the sender of an email and all the people on the email's CC list.
With one click you can search for all the emails you've sent and received from an individual, all the emails on the current email's subject (see that whole "conversation"), or all the emails from the sender's email domain (see all the emails from that person's company)
Choose between an 80,000 or 200,000 word American and British dictionary which checks your spelling automatically and offers corrections.
You can assign a folder where you want a person's emails to go to when you're done with them. Just click the dismiss button and the current email flies off to that folder to keep your Inbox tidy.
Block Viruses and Trojans
Eureka Email will not let you directly run an executable attachment sent from someone who is not in your address book, and will warn you and ask you to confirm running an attachment from someone who is.
From your address book you can assign an icon and a sound to each person that you know. You can view entries in your address book in order of name, icon or how many emails you've sent to or recieved from that person.